ViewSonic VG910S - 19" LCD Monitor User manual

Model No. VLCDS27944-3W/-4W
19” Color TFT LCD Display
Service Manual
ViewSonic VG910s/b-1
ViewSonic
381 Brea Canyon Road, Walnut, California 91789 USA - [phone]
(VG910s/b_SM_721 Rev. 1aMar.2004)

Copyright
Copyright
¤
2003by ViewSonic Corporation. All rights reserved. No partof this publication may be
reproduced, transmitted, transcribed, stored in a retrieval system, or translated into any language or
computer language, in any form or by any means, electronic, mechanical, magnetic, optical, chemical,
manual or otherwise, without the prior written permission of ViewSonic Corporation.
Disclaimer
ViewSonic makes no representations or warranties, either expressed or implied, with respect to the
contents hereof and specifically disclaims any warranty of merchantability or fitness for any particular
purpose. Further, ViewSonic reserves the right to revise this publication and to make changes from time
to time in the contents hereof without obligation of ViewSonic to notify any person of such revision or
changes.
Trademarks
ViewSonic is a registered trademark of ViewSonic Corporation.
All other trademarks used within this document are the property of their respective owners.
Optiquest is a registered trademark of ViewSonic Corporation.
Revision History
Revision Date Description Of Changes Approval
1a 03/03/04 Initial Release DCN-3605 Angela Luh
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TABLE OF CONTENTS
2. Specification
3. Front Panel Function Control Description
4. Circuit Description
6. Trouble Shooting Flow Chart
9. Block Diagram
10. Schematic Diagrams
7. Recommended Spare Parts List
1. Precautions and Safety Notices
5. Adjusting Procedure
8. Exploded Diagram And Spare Parts List
11. PCB Layout Diagrams
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2
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19
20
23
29
47
51
52
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Prior to using this manual, please ensure that you have carefully followed all the procedures outlined in the
user manual for this product.
• Read all of these instructions.
• Save these instructions for later use.
• Follow all warnings and instructions marked on the product.
• Do not use this product near water.
• This display should be installed on a solid horizontal base.
• When cleaning, use only a neutral detergent cleaner with a soft damp cloth. Do not spray with liquid or
aerosol cleaners.
• Do not expose this display to direct sunlight or heat. Hot air may cause damage to the cabinet and other
parts.
• Adequate ventilation must be maintained to ensure reliable and continued operation and to protect the
display from overheating. Do not block ventilation slots and openings with objects or install the display
in a place where ventilation may be hindered.
• Do not install this display near a motor or transformer where strong magnetism is generated. Images on
the display will become distorted and the color irregular.
• Do not allow metal pieces or objects of any kind fall into the display from ventilation holes.
Slots and openings in the cabinet and the back or bottom are provided for ventilation, to ensure reliable
operation of the product and to protect it from overheating, those openings must not be blocked or covered.
The openings should never be blocked by placing the product on a bed, sofa, rug, or other similar surface.
This product should never be placed near or over a radiator or heat register. This product should not be
placed in a built-in installation unless proper ventilation is provided.
1. Precautions and Safety Notices
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2.1 General Description
Active matrix thin-film-transistor (TFT) Type No: FLC48SXC11V/M190EN02V2
LCD
Fujitsu
FLC48SXC11V
AU
M190EN02V2
Active screen Size
Effective Display Size
Pixel Pitch
Pixel Format
Brightness
Contrast Ratio
Color (8 bits)
Viewing Angle range
(CR≧10, at Ta=25°C)
Backlight
19.0 inches diagonal
376.32mm (H) × 301.056mm (V)
0.294mm (H) × 0.294mm(V)
1280×1024 (SXGA )
250cd/m2(Typ. )
600:1 (Typ.)
16,777,216 colors
Up 85° Down 85°(type)
Left 85° Right 85°(type)
4 CCFL
Input Signals Analog RGB 0.7Vp-p / 75Ω
Digital RGB DVI Ver1.0 (TMDS Single Link)
H/V Separate sync. Sync 2.0~5.0Vp-p, Positive/Negative, 2.2KΩ
Input connector Analog D-sub 15 pin *1
Digital DVI-D 24pin *1
Synchronization Horizontal
Vertical
Non-interlaced
30 kHz to 82 kHz
50 Hz to 85 Hz
Maximum Pixel
Rated 135MHz
(automatically)
(automatically)
Resolution Horizontal
Vertical
1280 dots
1024 lines
Active Display Area Horizontal
Vertical
376.32 mm (typical, panel depends)
301.056 mm (typical, panel depends)
Power Supply
Voltage Rating
AC input
DC 12V
AC 100V~240V / 2A, 47.5~63Hz
5A.
AC Power
Consumption
less than 60W
less than 1W
less than 1W
On mode.
Active OFF mode.
DC Power OFF.
Current Rating AC input 2A @AC 100~240V.
Dimensions
Net
Gross
Depth(head only)
422.4(W) x 382.1(H) x62.0 (D) mm
422.4(W) x 438.48(H) x 180.56(D) mm(With stand base)
180.56mm
Weight Net
Gross
7.5 Kg
10.2Kg
Environmental
Conditions
Operating Temperature
Operating Humidity
Storage Temperature
Storage Humidity
0 to 40°C
20 to 85%
-20 to 60°C
5 to 85% (non-condensation)
Accessories AC cable
User Guide
CD Rom
Warranty Card
HD15 - HD15 cable
DVI(D) - DVI(D) cable
1.8m
English
1
1
1
1
2. Specification
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Regulatory StandardsUL, cUL, FCC-B, CB, CE, EPA, NOM, TUV/GS, TUV ERGO (covers ISO13406-2 &
MPRII), NEMKO, SEMKO, DEMKO, FIMKO, GOST-R + 20 ORIGINAL COPIES
HYGIENIC, PCBC, VCCI, BSMI, CCEE, PSB,C-TICK, TUV-S,TCO'99(VG910b),
TCO'03(VG910s), Energy, Energy Star, PCT, Taiwan Green Mark
Others Tilt Angle 20° up / 5° down
VESA DDC 2B compatible
2.2 Electrical Characteristics
2.2.1 Power Supply
AC Input Voltage AC 100~240V / 47.5~63Hz
Power Consumption：
Less than 60W On mode
Less than 1W Active Off mode
Less than 1W DC power Off
Current Rating 2A @ AC 100~240V
Inrush Current
Less than 50 Amp(peak) for 120 VAC
Less than 100 Amp(peak) for 220 VAC
Power cord：detachable, 3P, 1.8m
2.2.2 LCD
LCD Active matrix thin-film-transistor (TFT)
Active screen size 19.0 inches (376.32mm × 301.056mm) diagonal
Pixel Format 1280 x 1024 (SXGA )
R.G.B. stripe arrangement
Display method TFT, normally Black
Pixel pitch 0.294 (H) x 0.294 (V) mm
Dot number 1280 x 1024 x 3 dots
Backlight Edge-lighting type with 4 CCFL
(Cold Cathode Fluorescent Lamp)
Brightness 250 cd/m2 (Typ.)
Contrast ratio600:1 (Typ.)
Display color 16,777,216 colors
viewing angle typical Up 85° / down 85° / right 85° / left 85°
(Contrast ratio≧10 at Ta=25°C / 77°F)
Response time Rise time 15mS, Fall time 10mS (Typ. at Ta=25°C)
2.2.3 Power Management
VG910 will enter power saving mode under the following conditions:
Power Management condition and status in AC 240V
Signals
State Horizontal Vertical Video
Power
Supply LED
On Pulses Pulses Active <60W Green
Pulse No Pulse
Active off No Pulse Pulse
Blank <1W Amber
No Pulses No Pulses
Out off scan range <30KHz ,
>82KHz
<50Hz ,
>85Hz
- <60W Green
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AC power Off - - - Off Off
DC power Off - - - <1W Off
2.3 Video alignment
2.3.1 COLOR TEMPERATURE ALLIGMENT
a. APPLY VESA 1280x1024 / 60Hz , FULL WHITE PATTERN.( INPUT SIGNAL LEVEL
=0.7Vp-p )
b. AUTO WHITE BANLANCE MUST BE FINISH AT 32 GRAY PATTERN BEFORE AUTO
ALIGNMENT,
c. SET DEFAULT ÆCONTRAST TO 70% , BRIGHTNESS TO 100%
9300°K, 6500°K,：R G B SUB-BRIGHTNESS SET AS BELOW
9300°K 6500°K 5400°K 5000°K
R SUB-BRIGHTNESS 128 128 128 128
G SUB-BRIGHTNESS 128 128 128 128
B SUB-BRIGHTNESS 128 128 128 128
SET BRIGHTNESS = 255, BLACKLEVEL = 255 AT FACTORY DEFAULT.
2.3.2 DIGITAL ALIGNMENT
2.3.2.1 APPLY VESA 1280x1024 / 60Hz , FULL WHITE PATTERN ,
2.3.2.2 ADJUST R, G, B SUB-CONTRAST TO MEET FOLLOWING CHROMATICITY
SPEC.
x = 0.313 ±0.003 , y = 0.329 ±0.003
2.3.3 ANALOG ALIGNMENT
2.3.3.1 9300°K HIGH LUMINANCE ALIGNMENT
2.3.3.1.1 APPLY VESA 1280x1024 / 60Hz , FULL WHITE PATTERN.
2.3.3.1.2 ADJUST R, G, B SUB-CONTRAST TO MEET FOLLOWING
CHROMATICITY SPEC.
9300°K →x = 0.283 ±0.003, y = 0.298 ±0.003 , Y > 155 cd/m2
2.3.3.2 6500°K HIGH LUMINANCE ALIGNMENT
2.3.3.2.1 APPLY VESA 1280x1024 / 60Hz , FULL WHITE PATTERN.
2.3.3.2.2 ADJUST R, G, B SUB-CONTRAST TO MEET FOLLOWING
CHROMATICITY SPEC.
6500°K →x = 0.313±0.003, y = 0.329 ±0.003 , Y > 190 cd/m2
2.3.3.3 5400°K HIGH LUMINANCE ALIGNMENT
2.3.3.3.1 APPLY VESA 1280x1024 / 60Hz , FULL WHITE PATTERN.
2.3.3.3.2 ADJUST R, G, B SUB-CONTRAST TO MEET FOLLOWING
CHROMATICITY SPEC.
5400°K →x = 0.335 ±0.003, y = 0.350 ±0.003 , Y > 180cd/m2
2.3.3.4 5000°K HIGH LUMINANCE ALIGNMENT
2.3.3.4.1 APPLY VESA 1280x1024 / 60Hz , FULL WHITE PATTERN.
2.3.3.4.2 ADJUST R, G, B SUB-CONTRAST TO MEET FOLLOWING
CHROMATICITY SPEC.
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5000°K →x = 0.346 ±0.003, y = 0.359 ±0.003 , Y > 180cd/m2

2.3.4 LUMINANCE TEST
2.3.4.1 SET COLOR Temperature TO 9300°K
APPLY VESA 1280x1024/60Hz , APPLY FULL WHITE PATTERN, ADJUST
OSD BRIGHTNESS = 100%, CONTRAST = 70%.
1. THE LUMINANCE MEASURE SHOULD BE OVER 155cd/m2
2.3.4.2 SET COLOR Temperature TO 6500°K
APPLY VESA 1280x1024 / 60Hz , APPLY FULL WHITE PATTERN, ADJUST
OSD BRIGHTNESS = 100%, CONTRAST = 70%
1. THE BRIGHTNESS MEASURE SHOULD BE OVER 190cd/m2
2. SET BRIGHTNESS =100% , CONTRAST=100% ,THE LUMINANCE
MEASURE SHOULD BE OVER 220cd/m2
2.3.4.3 SET COLOR Temperature TO 5400°K
APPLY VESA 1280x1024 / 60Hz , APPLY FULL WHITE PATTERN, ADJUST
OSD BRIGHTNESS = 100%, CONTRAST = 70%
1. THE BRIGHTNESS MEASURE SHOULD BE OVER 180cd/m2
2.3.4.4 SET COLOR Temperature TO5000°K
APPLY VESA 1280x1024 / 60Hz , APPLY FULL WHITE PATTERN, ADJUST
OSD BRIGHTNESS = 100%, CONTRAST = 70%
1. THE BRIGHTNESS MEASURE SHOULD BE OVER 180 cd/m2
2.3.4.5 APPLY VESA 1280x1024/60Hz , APPLY FULL WHITE PATTERN, ADJUST
OSD BRIGHTNESS 100%, CONTRAST 70% ,
MEASUREMENT AT CENTER OF SCREEN
MODE X y Y
9300°K 0.283±0.010 0.298 ±0.010 OVER 155 cd/m2
6500°K 0.313 ±0.010 0.329 ±0.010 OVER190 cd/m2
5400°K 0.335 ±0.010 0.350 ±0.010 OVER 180 cd/m2
5000°K 0.346 ±0.010 0.359 ±0.010 OVER 180 cd/m2
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○○ ○Read EDID
2.4 Key function define
Key
“Vol -”
Key
“Vol +” Key “1”
Key
“DOWN
”
Key
“UP” Key “2” power functions
○○ ○Factory mode
○○
○Burn in off
○○○Burn in on
○○○All mode recall
○○
Lock(Unlock)
Power Key
○○
Lock(Unlock)
Osd Key
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2.5 EDID SERIAL NO. FORMAT
2.5.1 EDID for VG910s
2.5.1.1 Analog EDID
128 BYTES OF EDID CODE:
0 1 2 3 4 5 6 7 8 9
0 00 FF FF FF FF FF FF 00 5A 63
10 18 DA 01 01 01 01 01 0D 01 03
20 0E 26 1E 78 2E 5E 35 A4 59 4A
30 98 25 10 50 54 BF EF 80 81 80
40 81 40 71 4F 01 01 01 01 01 01
50 01 01 01 01 30 2A 00 98 51 00
60 2A 40 30 70 13 00 78 2D 11 00
70 00 1E 00 00 00 FF 00 41 33 31
80 30 33 30 31 30 30 30 30 31 0A
90 00 00 00 FD 00 32 4B 1E 52 0E
100 00 0A 20 20 20 20 20 20 00 00
110 00 FC 00 56 47 39 31 30 73 0A
120 20 20 20 20 20 20 00 7B
2.5.1.2 Digital EDID
128 BYTES OF EDID CODE:
0 1 2 3 4 5 6 7 8 9
0 00 FF FF FF FF FF FF 00 5A 63
10 18 DA 01 01 01 01 01 0D 01 03
20 80 26 1E 78 2E 5E 35 A4 59 4A
30 98 25 10 50 54 BF EF 80 81 80
40 81 40 71 4F 31 0A 01 01 01 01
50 01 01 01 01 30 2A 00 98 51 00
60 2A 40 30 70 13 00 78 2D 11 00
70 00 1E 00 00 00 FF 00 41 33 31
80 30 33 30 31 30 30 30 30 31 0A
90 00 00 00 FD 00 32 4B 1E 52 0E
100 00 0A 20 20 20 20 20 20 00 00
110 00 FC 00 56 47 39 31 30 73 0A
120 20 20 20 20 20 20 00 D0
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